Burning in my stomach!!

Ni

Guys.. I'm in immense pain when I pee. Since last night, when my pee is about to finish I get the most horrible burning pain inside, kind of below my stomach. I was surprised to see blood, assuming I had gotten my period, even though I'd just finished 16 days ago. Any help guys?! I know I should see my doctor first. Just hoping to get a response ://